Dresden 2009 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 14: Poster Ib: Magnetic Materials (1-14); Micro Magnetism/Computational Mag. (15-17); Surface Magnetism (18-22); Spin Structures/Phase Transitions (23-25)
MA 14.21: Poster
Dienstag, 24. März 2009, 10:15–13:00, P1B
Influence of Atomic Protrusions on a Nanolead Spin Structure — •Benjamin W. Heinrich1, Mircea V. Rastei1, Cristian Iacovita1, Pavel A. Ignatiev2, Valeri S. Stepanyuk2, Patrick Bruno2, Laurent Limot1, and Jean-Pierre Bucher1 — 1Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504, Université Louis Pasteur, F-67034 Strasbourg, France — 2Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle/Saale, Germany
Single Ni, Co and Cu atoms deposited in the center of cobalt nanoislands grown on Cu(111) are investigated by low-temperature scanning tunneling spectroscopy. Atomic protrusions profoundly modify the surface states of this model magnetic nanolead, ab initio calculations predicting the existence of atomic-like and surface-induced states. Contrary to the first, the second contribution is predicted by calculations to favor a change in sign of the spin polarization with respect to the pristine lead [1].
[1] B.W. Heinrich, C. Iacovita, M.V. Rastei, L. Limot, J.P. Bucher, P.A. Ignatiev, V.S. Stepanyuk, P. Bruno, submitted